VFD

Z2000T Z8000T Vector Control Frquency Inverter for Synchronous Motor Parameter List

ZONCN Z2000T Z8000T Vector Control Frquency Inverter for Synchronous Motor Parameter List Z900/S3800S is special frequency inverter for 3-phase AC permanent magnet synchronous motor with open and closed loop control mode. Technical Specification  Item Specification Max. Frequency 0 ~ 600Hz Carrier Frequency 0.5KHz  ~ 16KHz Input frequency resolution Digital setting：0.01Hz Analog setting：max. Frequency X 0.025% … Read more

Defining Scalar and Vector Control in VFD Outputs

Two common methods exist for driving induction motors with VFDs – linear scalar control, which is often labeled as V/f, and vector, or field-oriented control, which can be a bit more complex to understand. Variable frequency drives are the industry-standard method of controlling 3-phase induction motors. The output of a VFD creates a DC pulse … Read more

Teardown: What’s Inside a Variable Frequency Drive (VFD)?

Variable frequency drive units can be found inside tons of control cabinets, but what happens if you disassemble one to see what’s inside and how it works? We did just that. The results might surprise you. Here at this, we’ve been on a bit of a variable frequency drive (VFD) kick recently, but who can … Read more

Variable Frequency Drives (VFDs) In Motor Control

Nearly all industrial engineers have heard of a VFD. But what does VFD stand for, how do they work, and why would we prefer using a VFD to control motors for heavy loads? The VFD solves the challenges of driving a 3-phase motor with careful speed control and efficiency, without being overly cost-prohibitive in most … Read more

Nidec Releases High-Speed Communications Module for HVAC Drive Systems

Nidec’s Control Techniques has launched the SI-BACnet IP add-on module for new and existing HVAC drives to help communicate between devices and create a connected automated building. Recently, Japan-based industrial control manufacturer Nidec announced the release of a new product designed to drive more building automation capability toward motor control systems: the SI-BACnet IP module. … Read more

Industrial Networks: “Protocol over a Standard?”

Industrial communication channels often contain terms such as ‘Modbus over RS485’ or ‘CIP Safety over Ethernet’. What does it mean to send one network over another, and how does it work to your advantage? Industrial networking relies on the knowledge of professionals who are becoming more widely recognized with the term ‘OT’, meaning operational technology. … Read more

How Pulse Width Modulation is Used in Variable Frequency Drives

In this article, learn how variable frequency drives make use of the principle of pulse width modulation to create analog-type signals from a digital source, such as with motor drives. Pulse Width Modulation, or PWM, is a commonly used strategy for creating analog types of signals from a digital source. This is a common method … Read more

The Link Between VFD Skip Frequency Parameters and Harmonics

Variable frequency drives (VFDs) can output simulated waveforms of nearly any frequency. However, in order to be truly useful, harmonics and resonance in the system must be avoided and frequency parameters should be put in place. Variable frequency drives (VFDs) are one of the most common methods of driving three-phase motors. The output is a … Read more

Controlling VFDs with Manual Inputs

To increase the flexibility of a motor control system, a variable frequency drive (VFD) is a common device that solves many motor control problems. In this article, learn how to control manual input of VFDs. Variable frequency drives solve many of the challenges associated with driving three-phase motors including adjustable speeds, networking many motors together … Read more